We leveled the wood on the wall and marked its placement with a pencil. We found and marked two studs using the magnetic stud finder.

We marked where to drill the pilot holes.

The screws that attach the angle iron to the wall will stick out a bit. In order for the back of the wood to lay flush with the angle iron, we needed to create an indentation in the wood. We used a wood boring drill bit.

The screw head fits perfectly.

We drilled pilot holes to screw the wood into the angle iron from the underside.